#407A91
Closest named color: Cerulean (#457B9D). oklch(55% 0.07 226.1), rgb(64, 122, 145).
Aa
White text reads best on this color (4.76:1).
About this color
#407A91 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.070 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.020 away. White text reads best on it, at 4.76:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.41:1 |
| White text | 4.76:1 |
Values
| HEX | #407A91 |
| RGB | rgb(64, 122, 145) |
| HSL | hsl(197, 39%, 41%) |
| OKLCH | oklch(55% 0.07 226.1) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #407A91 | 4.76:1 | AA | Lc -78.3 | Fine for body text |
| Black text on #407A91 | 4.41:1 | AA large text | Lc 31.2 | Non-text elements, placeholder text |
| #407A91 text on white | 4.76:1 | AA | Lc 72.9 | Content text, not long reading |
| #407A91 text on black | 4.41:1 | AA large text | Lc -28.8 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 600.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CEDCE2
oklch(88.6% 0.017 225.2)
-
Step 300
300
#ACC5D0
oklch(80.8% 0.031 226.1)
-
Step 400
400
#7FA8B9
oklch(70.8% 0.051 225.3)
-
Step 500
500
#5D92A8
oklch(63.1% 0.065 226.2)
-
Step 600
600 (this color)
#407A91
oklch(55% 0.07 226.1)
-
Step 700
700
#33687D
oklch(49% 0.066 226.4)
-
Step 800
800
#2B5566
oklch(42.7% 0.055 226.6)
-
Step 900
900
#284653
oklch(37.6% 0.042 227.6)
-
Step 950
950
#182930
oklch(26.9% 0.026 225.8)
#407A91 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #6E7892 | 0.054 |
| Deuteranopia (no green cones) | #626F91 | 0.048 |
| Tritanopia (no blue cones) | #008181 | 0.050 |
| Achromatopsia (no color) | #737373 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #407A91
#407A91
oklch(55% 0.07 226.1)
- #94644E
#94644E
oklch(54.9% 0.071 45.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #407A91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.020
- Metallic Blue #4F738E ΔE 0.023
- Stormy Blue #507B9C ΔE 0.025
- Dull Blue #49759C ΔE 0.028
- Ocean #017B92 ΔE 0.031
- Muted Blue #3B719F ΔE 0.040
- Sea Blue #047495 ΔE 0.041
- Grey Blue #647D8E ΔE 0.042
Use #407A91 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.